| Subject | English | Spanish |
| comp., MS | accounts payable three-way invoice matching | conciliación triple de facturas de proveedores (A practice of matching vendor invoice prices and product quantities to purchase orders and product receipts) |
| mech.eng. | aircraft-related three-axis system | sistema de tres componentes de avión |
| social.sc. | allowance for young children up to the age of three months | subsidio concedido a lactantes hasta la edad de tres meses |
| IT, transp. | angular three-axis rate sensor | detector de girómetro |
| IT, transp. | angular three-axis rate sensor | detector angular de tres ejes |
| IT, transp. | angular three-axis rate sensor | detector angular de 3 ejes |
| law | at most, the three best performing Member States in terms of price stability | los tres Estados miembros,como máximo,más eficaces en cuanto a la estabilidad de precios |
| gen. | at three | a las tres |
| gen. | at three sounds good to me | a las tres me parece bien |
| gen. | at two or three, if you like | a las dos o a las tres, si te parece |
| math. | Bock's three component model | modelo de tres componentes de Bock |
| gen. | bring enough for the three of us | traiga para los tres |
| gen. | bring enough for three | traiga para los tres |
| gen. | can’t you go at three o’clock? | ¿no puede ir a las tres? |
| law, lab.law. | continuous three-shift working | trabajo a turnos continuo |
| law, lab.law. | continuous three-shift working | trabajo continuo |
| math. | cubic designs with three associate classes | diseños cúbicos con tres clases del asociado |
| met. | cutting machine that will move the blowpipe in three dimensions | máquina de oxicorte que mueve el soplete según tres dimensiones |
| law | decision adopted by a majority of three-quarters of the representatives of the Member States | decisión adoptada por mayoría de tres cuartos de los representantes de los Estados miembros |
| health. | disease of the three D's dermatitis, diarrhoea, dementia | pelagra |
| health. | disease of the three D's dermatitis, diarrhoea, dementia | enfermedad de las tres D dermatitis, diarrea, demencia |
| tech. | engine mounting of three point type | motor suspendido en tres puntos |
| med. | epileptic three-phase crisis | crisis epiléptica trifásica |
| gen. | every three years there shall be a partial replacement of the Judges | cada tres años tendrá lugar una renovación parcial de los jueces |
| agric. | fertiliser containing three macronutrients | abono de tres elementos fertilizantes |
| agric., chem. | fertilizer with three nutrients | fertilizante con tres elementos |
| mater.sc., met. | formation of rupture by instability - three-point-fissure | formación de una rotura por inestabilidad-fisuras de punto triple |
| UN, geol. | fractal properties in two and three dimensions | propiedades fractales en dos y tres dimensiones |
| ed., unions. | general system for the recognition of higher-education diplomas awarded on completion of professional education and training of at least three years' duration | sistema general de reconocimiento de los títulos de enseñanza superior que sancionan formaciones profesionales de una duración mínima de tres años |
| gen. | Group of Three | Grupo de los 3 |
| chem., el. | group three material | material del grupo 3 |
| span. | handcart with three walls | carretilla con triple agua (n.f.) |
| load.equip., mexic. | handcart with three walls | carro de tres paredes |
| load.equip., span. | handcart with three walls | carretilla con tres paredes |
| span. | handcart with three walls | carretilla con tres paredes (n.f.) |
| mexic. | handcart with three walls | carro de tres paredes (n.m.) |
| gen. | he worked for three years in Spain | trabajó durante tres años en España |
| gen. | he writes three | él escribe tres |
| med. | Helmholtz three-cone apparatus | optómetro de Helmholtz |
| gen. | here are three | le doy tres |
| gen. | how much is twenty-three and four? | ¿cuánto es veintitrés y cuatro? |
| med. | hydro-electric three-cell bath | baño hidroeléctrico tricelular |
| gen. | I go at three in the afternoon | yo voy a las tres de la tarde |
| gen. | I have three days more | tengo tres días más |
| gen. | I have three more days | tengo tres días más |
| gen. | I have three more dollars | tengo tres dólares más |
| gen. | I have three more evenings | tengo tres tardes más |
| gen. | I have three more nights | tengo tres noches más |
| gen. | I have three more tickets | tengo tres billetes más |
| gen. | I want three more | quiero tres más |
| gen. | I was hospitalized three months after the accident | Duré hospitalizado tres meses después del accidente |
| gen. | I will give you three | le doy tres |
| gen. | is there three less? | ¿hay tres menos? |
| gen. | it costs three hundred a month | cuesta trescientos al mes |
| gen. | it is almost three o’clock | son casi las tres |
| gen. | it is three fifteen | son las tres y cuarto |
| gen. | it is three forty-two | son las tres con cuarenta y dos |
| gen. | it is three o'clock | son las tres |
| gen. | it is three to one | está a tres por uno |
| gen. | level three clearance record | tercer reconocimiento de sectores |
| gen. | level three clearance record | reconocimiento de nivel 3 |
| life.sc. | method of three tripods | centrado forzado |
| CNC | multilevel three-term control | regulación PID de tres niveles |
| gen. | number three | número tres |
| law | on the expiry of a period of three months from the date of referral to the Council | transcurrido el plazo de tres meses a partir del momento en que la propuesta se haya sometido al Consejo |
| gen. | Our band resurfaced after three years | Nuestra banda musical resurgió después de tres años |
| meas.inst. | positive-negative three level action | acción por más o menos |
| CNC, meas.inst. | positive-negative three level action | acción a tres niveles |
| IT, el. | positive-negative three-step action | acción más-menos de tres escalones |
| tech. | precision three-dimensional navigation guidance | orientación de navegación tridimensional de precisión |
| CNC | quasi-continuous action of a three-level controller | acción casi continua de un regulador de tres niveles |
| transp., construct. | road with three lanes | carretera de tres vías |
| transp., construct. | road with three lanes | carretera de tres sendas |
| transp., construct. | road with three lanes | carretera de tres pistas |
| transp., construct. | road with three lanes | carretera de tres carriles |
| transp., construct. | road with three lanes | carretera de tres canales |
| gen. | rule of three | regla de tres |
| polit. | rules governing travel by committee delegations outside the three places of work of the European Parliament | reglamentación relativa a los desplazamientos de las delegaciones de las comisiones parlamentarias fuera de los tres lugares de trabajo del Parlamento Europeo |
| UN, afr. | Security Phase Three relocation of non-essential staff and dependants outside the country | tercera etapa del plan de seguridad (traslado de funcionarios no indispensables y de sus familiares a cargo fuera del país) |
| tech., industr., construct. | set of three cards | conjunto de tres cardas |
| forestr. | standard of three rotations | resalvo antiguo de segunda clase |
| gen. | Start to form teams of three to start working | Comiencen a formar equipos de tres personas para empezar a trabajar |
| comp., MS | strong password (A password that cannot be easily guessed or cracked. A strong password is at least eight characters long, does not contain all or part of the user's account name, and contains at least three of the four following categories of characters: uppercase characters, lowercase characters, numbers, and symbols found on the keyboard (such as !, | contraseña segura |
| gen. | sure, if you let me know at three o’clock | claro, si me avisa a las tres |
| fin. | system of guarantees for the three-year programme of loans | sistema de garantias para el programa trienal de créditos |
| UN | terms of three years | periodo de tres año |
| gen. | The doctor told me to rest the arm for three more weeks | El doctor me dijo que reposara el brazo por tres semanas más |
| gen. | The first group arrived on bus number three | El primer grupo llegó en el autobús número tres |
| gen. | the rate of exchange is three to one | el cambio está a tres por uno |
| gen. | The Three Areas | "zonas de transición" |
| gen. | The Three Areas | las "Tres zonas" |
| gen. | the transitional period shall be divided into three stages | el período transitorio se dividirá en tres etapas |
| gen. | There are three members in my family | Hay tres miembros en mi familia |
| gen. | there are three Spanish classes | hay tres clases de español |
| gen. | there were three Spanish classes | había tres clases de español |
| agric. | three abreast | tiro de tres caballos |
| med. | three-agent therapy | terapéutica de tres agentes |
| meas.inst. | three-ammeter method | método con tres amperímetros |
| mech.eng. | three-arm bell crank | balancín de 3 brazos |
| bot. | three-awn | aristida Aristida caerulescens |
| bot. | three-awned grass | aristida Aristida caerulescens |
| transp. | three-axis attitude indicator | indicador esférico |
| gen. | three-axis bench firing | tiro en banco rotativo |
| transp. | three-axis platform | plataforma estabilizada |
| IT, transp. | three-axis rate sensor | girómetro de 3 componentes |
| IT, transp. | three-axis rate sensor | girómetro de tres componentes |
| sat.comm. | three-axis-stabilized satellite | satélite estabilizado según los tres ejes |
| commer. | three-band reduction formula | fórmula de reducción en las cuatro bandas de precios |
| commer. | three-band reduction formula | fórmula de reducción en las tres bandas de precios |
| tech. | three-barrel carburetor | carburador de triple garganta |
| baseb. | three-base hit | tripletazo |
| baseb. | three-base hit | triple |
| baseb. | three-base hit | tribey |
| nat.sc., agric. | three-bearded rockling | lota (Gaidropsarus vulgaris, Motella tricirrata, Onos tricirrata) |
| auto. | three-bearing crankshaft | cigüeñal de tres cojinetes |
| agric. | three-blade disk plow | arado tridisco |
| agric. | three-blade disk plow | arado de tres discos |
| transp., avia., mech.eng. | three-blade propeller | hélice de tres palas |
| transp., avia., mech.eng. | three-blade propeller | hélice de 3 palas |
| nautic. | three-bladed propeller | hélice tripala |
| energ.ind., mech.eng., el. | three bladed wind turbine | rotor tripala |
| energ.ind., mech.eng., el. | three bladed wind turbine | hélice tripala |
| gen. | three bottles of beer | tres botellas de cerveza |
| gen. | Three candidates were chose for the position of secretary | Se escogieron a tres candidatos para el puesto de secretaria |
| gen. | three cashew nuts | tres anacardos |
| med. | three-cavity injury | lesión tricavitaria |
| meteorol. | three-cell model | modelo de tres celdas |
| med. | three-chamber system | gráfica de tres ventrículos |
| snd.rec. | three-channel recorder | registrador de tres canales |
| tech., chem. | three chromaticity coordinate | coeficiente tricromático |
| stat. | three-class plan | plan de tres clases |
| el. | three coil regulation | regulación de cuatro barras |
| meas.inst. | three-color recorder | registrador de tres colores |
| med. | three-colour | tricromo |
| textile | three-colour process | tricromía |
| meas.inst. | three-colour recorder | registrador de tres colores |
| avia. | three-component balance | balanza de tres componentes |
| supercond. | three-component superconducting wire | hilo superconductor de tres componentes |
| chem. | three-component system | sistema de tres componentes |
| tech. | three-condition code | código trivalente |
| tech. | three-condition code | clave trivalente |
| telegr. | three conditions | trivalente |
| pwr.lines. | three-conductor bundle | haz triple triplex |
| el. | three-core cable | cable de tres hilos |
| el. | three-core cable | cable de tres conductores |
| mech.eng. | three-corner file | lima de sección triangular |
| tech. | three cornered bearing scraper | raspador de cojinetes de tres esquinas |
| pack. | three-cornered strut | listón de tres cantos |
| pack. | three-cornered strut | listón triangular |
| agric. | three-course cropping | sistema de tres campos |
| agric. | three-course cropping | rotación trienal |
| agric. | three-course rotation | sistema de tres campos |
| forestr. | three-cross hybrid | híbrido de tres líneas |
| forestr. | three-cross hybrid | híbrido de tres vías |
| med. | three-day fever | fiebre de los tres días |
| med. | three-day fever | fiebre de los flebótomos |
| med. | three-day fever | fiebre de papataci |
| vet.med. | three-day sickness | enfermedad de tres días febris ephemeralis |
| health., anim.husb. | three-day sickness | enfermedad de los tres dias |
| vet.med. | three-day sickness | fiebre efímera febris ephemeralis |
| med. | three-day test | prueba de tres días |
| el. | three dB bandwidth | banda de paso a 3 dB |
| el. | three dB bandwidth | ancho de banda a tres dB |
| el. | three dB bandwidth | ancho de banda a 3 dB |
| el. | three dB passband | ancho de banda a tres dB |
| el. | three dB passband | banda de paso a 3 dB |
| el. | three dB passband | ancho de banda a 3 dB |
| gen. | three degrees | tres grados |
| meas.inst. | three-dial air capacitor | condensador de aire con tres esferas |
| math. | three-digit number | número de tres dígitos |
| math. | three-dimensional | tridimensional |
| math. | three-dimensional | de dimensión tres |
| construct. | three dimensional analysis | cálculo tridimensional |
| meas.inst. | three-dimensional autopilot | piloto automático triaxial |
| chem. | three-dimensional braided composite | material hibrido con tejido |
| chem. | three-dimensional braiding | trenzado tridimensional |
| radio | three-dimensional computer-generated image | imagen tridimensional generada por ordenador |
| radio | three-dimensional computer-generated image | I3DC |
| math. | three-dimensional coordinate system | el sistema coordenado tridimensional |
| math. | three-dimensional coordinate system | sistema coordenado tridimensional |
| rem.sens. | three-dimensional coordinates | coordenadas en el espacio |
| rem.sens. | three-dimensional coordinates | coordenadas espaciales |
| chem. | three-dimensional cylindrical construction | construcción cilindrica tridimensional |
| construct. | three-dimensional development plan | plano de masas |
| construct. | three-dimensional development plan | plan de ubicación |
| construct. | three-dimensional development plan | plano de ubicación |
| math. | three-dimensional domain | dominio tridimensional |
| stat. | three-dimensional graph | gráfico tridimensional |
| gen. | three-dimensional H-point machine | maniquí tridimensional con punto H |
| gen. | three-dimensional H-point machine | maniquí 3 DH |
| commun., IT | three-dimensional image display | visualización de imágenes en 3D |
| math. | three-dimensional lattice | damero tridimensional |
| math. | three-dimensional lattice | retìculo tridimensional |
| stat. | three-dimensional lattice | retículo tridimensional |
| chem. | three-dimensional macromolecule | macromolécula tridimensional |
| commun., IT | three-dimensional model | modelo en 3D |
| chem. | three-dimensional orthogonal fabric | tejido ortogonal tridimensional |
| mater.sc. | three-dimensional orthogonal weave | trenzado tridimensional ortogonal |
| mater.sc., met. | three-dimensional photoelasticity studies with the use of the frozen stress method | ensayo de fotoelasticimetría tridimensional mediante el procedimiento de congelación |
| chem. | three-dimensional polymer | polímero tridimensional |
| radio | three-dimensional prediction | predicción tridimensional |
| mater.sc. | three-dimensional scene analysis | análisis de escenas tridimensionales |
| textile | three-dimensional structure | estructura tridimensional |
| med. | three-dimensional system | sistema tridimensional |
| radio | three-dimensional television | televisión en tres dimensiones |
| radio | three-dimensional television | televisión en relieve |
| radio | three-dimensional television | televisión 3D |
| meteorol. | three dimensional VAR | asimilación variacional VAR tridimensional |
| meteorol. | three-dimensional variational method | método variacional en tres dimensiones |
| IT | three-dimensional vector rate | tasa vectorial tridimensional |
| agric. | three-disc plough | arado tridisco |
| agric. | three-disc plough | arado de tres discos |
| transp. | three divided highways within one right of way | carretera dividida |
| transp. | three divided highways within one right of way | carretera de dos vías |
| transp. | three divided highways within one right of way | carretera doble |
| transp. | three divided highways within one right of way | carretera dual |
| transp. | three divided highways within one right of way | carretera con tres calzadas separadas |
| gen. | three dried apricots | tres albaricoques deshidratados |
| med. | three-D-therapy | terapéutica de las tres D |
| med. | three-edged awl | taladro de tres filos |
| med. | three-edged wedge | cuña tricórnea |
| textile | three-eighths blood | grado de lana tres octavos de sangre |
| el. | three-electrode tube | tubo de tres electrodos |
| el. | three-electrode tube | triodo |
| agric. | three element fertilizer | abono de tres nutrientes |
| agric. | three element fertilizer | abono terciario |
| agric. | three element fertilizer | abono ternario |
| agric. | three element fertilizer | abono de tres elementos |
| tech. | three-engine airplane | avión trimotor |
| avia. | three-engine jets | aviones de tres motores |
| comp., MS | three-factor authentication | autenticación en tres fases (An authentication method that requires three authentication methods, which may include something the user provides, such as certificates; something the user knows, such as user names, passwords, or pass phrases; physical attributes, such as a thumbprint; and personal attributes, such as a personal signature) |
| agric. | three-field rotation | sistema de tres campos |
| agric. | three-field rotation | rotación trienal |
| med. | three-finger hook | gancho de tres brazos |
| med. | three-finger manipulation | maniobra obstétrica interna tridigital |
| med. | three-finger sulcus | surco de los tres dedos cubitales |
| el. | three-five compound semiconductor | semiconductor III-V |
| el. | three-five compound semiconductor | semiconductor compuesto 3-5 |
| el. | three-five compound semiconductor | semiconductor 3-5 |
| el. | three-five semiconductor | semiconductor compuesto 3-5 |
| el. | three-five semiconductor | semiconductor III-V |
| el. | three-five semiconductor | semiconductor 3-5 |
| baseb. | three-foot line | línea de los tres pies |
| agric. | three-furrow disc plough | arado tridisco |
| agric. | three-furrow disc plough | arado de tres discos |
| earth.sc., el. | three-ganged rectilinear potentiometer | potenciómetro rectilíneo de 3 elementos |
| med. | three-generation reproduction test | prueba de reproducción en tras generaciones |
| med. | three-glass test | prueba de tres frascos |
| med. | three-glass test | prueba de los tres vasos |
| med. | three-group metaphase | metafase de tres grupos |
| commun. | three-gyro platform | plataforma de 3 giroscopios |
| construct. | three-hinged arch | arco de tres articulaciones |
| construct. | three-hinged frame | pórtico de tres articulaciones |
| construct. | three-hinged frame | marco de tres articulaciones |
| baseb. | three-hundred | trescientos |
| gen. | three hundred dollars, furnished | trescientos dólares amueblado |
| gen. | three-in-one wireless communication | comunicación inalámbrica "3 en 1" |
| el. | three-input adder | sumador total |
| mech.eng. | three-jaw chuck | mandril de tres mordazas |
| tech. | three-jet carburetor | carburador de tres surtidores |
| transp., construct. | three-lane road | carretera de tres sendas |
| transp., construct. | three-lane road | carretera de tres vías |
| transp., construct. | three-lane road | carretera de tres pistas |
| transp., construct. | three-lane road | carretera de tres carriles |
| transp., construct. | three-lane road | carretera de tres canales |
| gen. | three layer | con tres capas |
| tech., industr., construct. | three-layer board | cartón de tres capas |
| wood. | three-layer board | tablero de madera terciada |
| tech., industr., construct. | three-layer board | cartón tríplex |
| wood. | three-layer board | tablero de tres capas |
| tech., industr., construct. | three-layer paper | tríplex |
| tech., industr., construct. | three-layer paper | papel de tres capas |
| med. | three-layer sputum | esputo de tres capas |
| gen. | three layers | con tres capas |
| meas.inst., BrE | three-level action | acción de tres niveles |
| econ. | three-level cooperative credit scheme | plan de crédito cooperativista en tres niveles |
| forestr. | three-line hybrid | híbrido de tres líneas |
| forestr. | three-line hybrid | híbrido de tres vías |
| agric. | three-mash method | método de tres mostos |
| agric. | three-mash system | método de tres mostos |
| chem. | three-membered ring | anillo de tres miembros |
| fin. | three-month interbank rate | tipo interbancario a tres meses |
| chem. | three-neck flask | matraz de tres bocas |
| chem. | three-neck flask | balón de tres bocas |
| chem. | three-necked flask | matraz de tres cuellos |
| textile | three-needle cover stitch | punto cubriente de tres agujas |
| textile | three-needles sewing machine | máquina de coser con tres agujas |
| health., UN | Three Ones | Tres unos |
| gen. | Three Ones | los "Tres unos" |
| gen. | Three pairs of shoes are enough for me | Me bastan tres pares de zapatos |
| commun. | three-party conference | consulta y conferencia a tres |
| commun. | three-party service | consulta y conferencia a tres |
| snd.rec., meas.inst. | three-pen recorder | registrador de tres colores |
| tech. | three-penny nail | clavo de 1/4 de pulgada |
| econ. | three per cent action plan | Plan de acción del 3% |
| el. | three-phase | trifásico |
| tech. | three-phase | de tres fases |
| el.tract. | three-phase AC motor vehicle | vehículo motor trifásico |
| el.tract. | three-phase AC traction | tracción a corriente alterna trifásica |
| textile | three-phase alternating current | corriente eléctrica trifásica |
| radiol. | three-phase apparatus | generador de seis pulsos |
| el.tract. | three-phase bridge rectifier | puente rectificador trifásico |
| meas.inst. | three-phase clock | emisor trifásico de cadencia |
| cables | three-phase concentric neutral cable | cable trifásico con neutro concéntrico |
| tech., el. | three phase four-wire meter | contador trifásico de cuatro hilos |
| tech. | three-phase induction motor | motor de inducción trifásico |
| automat. | three-phase induction regulator | reóstato trifásico de excitación |
| el.gen. | three-phase insulation fault | defecto de aislamiento trifásico |
| el.gen. | three-phase insulation fault | falta de aislamiento trifásico |
| gen. | three-phase network diagram | esquema trifásico de una red |
| el. | three-phase power measurement | medida de potencia trifásica |
| UN, polit. | three-phase process | proceso en tres etapas |
| el., sec.sys. | three-phase reclosing equipment | reenganchador tripolar |
| el., sec.sys. | three-phase reclosing equipment with synchrocheck | reenganchador tripolar con control de sincronismo |
| tech. | three-phase rotating rectifier | rectificador trifásico giratorio |
| el.gen. | three-phase system diagram | esquema trifásico de una red |
| energ.ind., industr. | three-phase winding | bobinado de tres fases |
| med. | three-phase X-ray unit | aparato de rayos X trifásico |
| agric. | three phases in one method | túnel sistema |
| agric. | three phases in one method | "3 fase 1" |
| agric., mech.eng. | three-phases-in-one method | tunelsistema |
| agric., mech.eng. | three-phases-in-one method | pasteurizacion en masa |
| mater.sc. | three-piece can | lata de tres piezas |
| pack. | three-piece can | envase metálico de tres piezas (consisting of body, bottom and top end, consistente en: cuerpo, fondo y tapa) |
| pack. | three-piece pull-through box | caja doble con tirador |
| gen. | three-pillar structure | estructura en tres pilares |
| antenn. | three-pin central base | casquillo central con tres patillas |
| construct. | three-pinned arch | arco triarticulado |
| avia., meas.inst. | three-plane autopilot | piloto automático triaxial |
| tech. | three-plate clutch | embrague de tres discos |
| chem. | three-plate injection mold | molde de inyección con placa intermedia móvil |
| chem. | three-plate injection mould | molde de inyección con placa intermedia móvil |
| gen. | three plus three group | Grupo de los Tres más Tres |
| gen. | three plus three group | Grupo de los Cinco más Uno |
| gen. | three plus three group | 3UE+3 |
| tech., industr., construct. | three-ply board | cartón tríplex |
| tech., industr., construct. | three-ply board | cartón de tres capas |
| chem. | three-ply lamination | forrado con tres capas |
| tech., industr., construct. | three-ply paper | tríplex |
| tech., industr., construct. | three-ply paper | papel de tres capas |
| med. | three-point articulation | articulación dentaria de tres puntos |
| med. | three-point articulator | articulador dental de Gysi |
| med. | three-point contact | contacto de tres puntos |
| agric. | three point coupling with pendulum equalizer | acoplamiento en 3 puntos con equilibrio pendular |
| med. | three-point crossing test | prueba de entrecruzamiento en tres puntos |
| med. | three-point forceps | pinzas de tres puntos de presión |
| agric. | three-point hitch | embrague trifásico |
| agric. | three-point implement hitch | embrague trifásico |
| tech. | three-point jacking | levantamiento en gatos en tres puntos |
| tech. | three-point landing | aterrizaje perfecto |
| tech. | three-point landing | aterrizaje en tres puntos |
| agric. | three-point linkage | embrague trifásico |
| meas.inst. | three-point measuring instrument | aparato de medida de tres puntos |
| forestr. | three point method | el método de tres puntos |
| meas.inst., amer. | three-point problem | problema de los tres puntos |
| agric. | three-point quick coupling | embrague trifásico |
| transp., polit. | three-point seat belt | cinturón con tres puntos de anclaje |
| tech. | three-point suspension | suspensión en tres puntos |
| avia. | three-pointed altimeter | altímetro de tres agujas |
| agric. | three points hydraulic lift plough | arado para el enganche de tres puntos |
| agric. | three points hydraulic lift plough | arado accionado hidráulicamente |
| el. | three-pole active RC filter | filtro RC activo de tres polos |
| el., sec.sys. | three-pole reclosing equipment | reenganchador tripolar |
| el., sec.sys. | three-pole reclosing equipment with synchrocheck | reenganchador tripolar con control de sincronismo |
| el. | three pole switch | contactor tripolar |
| meas.inst. | three-position control | mando de tres niveles |
| CNC | three-position controller | regulador de tres niveles |
| auto.ctrl. | three-position element | elemento de tres posiciones |
| railw., sec.sys. | three-position relay | relé de tres posiciones |
| polit. | three-Presidency team | Trío Presidencial |
| UN, polit. | three programmes cadet training, refresher courses for former police, and voluntary redeployment to increase the percentage of minority representation in the police forces | los tres programas (formación de nuevos cadetes, cursos de repaso para antiguos oficiales de policía y despliegue voluntario) |
| food.ind. | three-quarter blend | mezcla aligerada de materias grasas |
| agric. | three quarter butter | mantequilla con tres cuartas partes de materia grasa |
| agric. | three quarter butter | mantequilla con contenido de graso reducido |
| agric. | three quarter butter | mantequilla semidesgrasada |
| agric., food.ind. | three-quarter butter | mantequilla tres cuartos |
| agric., food.ind. | three-quarter butter | mantequilla ligera |
| agric. | three quarter butter | mantequilla con bajo contenido de grasa |
| agric., food.ind. | three-quarter butter | mantequilla aligerada |
| med. | three-quarter crown | corona parcial |
| med. | three-quarter crown | corona de tres cuartos |
| tech. | three-quarter floating axle | eje flotante de tres cuartos |
| food.ind. | three-quarter margarine | margarina aligerada |
| med. | three-quarter pack | envoltura de tres cuartos |
| tech. | three-quarter S trap | sifón en S a 45 grados |
| agric., mech.eng. | three-quarter track | oruga tres cuartos |
| agric., mech.eng. | three-quarter tracked | oruga tres cuartos |
| agric., food.ind. | three quarter-fat butter | mantequilla ligera |
| agric., food.ind. | three quarter-fat butter | mantequilla tres cuartos |
| agric., food.ind. | three quarter-fat butter | mantequilla aligerada |
| baseb. | three-quarter's arm | a tres cuartos |
| agric. | three-quarters normal fruit | fruto tres-cuartos definido |
| agric. | three quarters side | tres cuartos traseros |
| ed. | three-quarters time | con dedicación de tres cuartos de tiempo |
| transp. | three-rail track | vía mixta |
| transp. | three-rail track | vía con tres carriles |
| forestr. | three ranked leaf | hoja trística |
| el. | three-rate meter | contador para tre tarifas |
| tech., el. | three rate meter | contador de triple tarifa |
| el. | three-rate tariff | tarifa de precio triple |
| mater.sc., el. | three-rate time-of-day tariff | triple tarifa horaria |
| tech. | three-rib tire | neumático de tres nervaduras |
| gen. | three-ring cluster | haz trianular |
| industr., construct. | three-roll calender | calandra de tres cilindros |
| mech.eng. | three-roll mill | molino de tres cilindros |
| nat.sc. | three "R"s rule | regla de las tres R |
| span. | three side protected truck | carretilla con tres paredes (n.f.) |
| load.equip., span. | three side protected truck | carretilla con tres paredes |
| load.equip., mexic. | three side protected truck | carro de tres paredes |
| span. | three side protected truck | carretilla con triple agua (n.f.) |
| mexic. | three side protected truck | carro de tres paredes (n.m.) |
| stat. | three-sigma limits | límites tres sigmas |
| el. | three-signal fifth-order mix | mezcla de quinto orden de tres señales |
| tech. | three-speed gear | caja de cambios de tres velocidades |
| IMF. | three-speed recovery | recuperación a tres velocidades |
| fish.farm. | three-spined stickleback | salpa xurel (Gasterosteus aculeatus, Gasterosteus aculeatus aculeatus) |
| ichtyol. | three-spined stickleback | espinosillo Gasterosteus aculeatus |
| ichtyol. | three-spot slipper lobster | cigarro de tres manchas Scyllarides delfosi |
| construct. | three-square file | lima triangular |
| mech.eng. | three-stage axial flow turbine | turbina de tres escalones de flujo axial |
| tech. | three-stage axial turbine | turbina axial de tres etapas |
| chem. | three-stage compressor | compresor trietápico |
| stat. | three-stage least squares | tres etapas mínimos cuadrados |
| span. | three-stage mast | mástil triple (n.m.) |
| load.equip., span. | three-stage mast | mástil de tres etapas |
| span. | three-stage mast | mástil de tres etapas (n.m.) |
| obs. | three-star flag officer | general o almirante |
| CNC, amer. | three-step action | acción de tres niveles |
| meas.inst. | three-step control | mando de tres niveles |
| econ. | three stones cookfire | fogón de tres piedras |
| law | three strikes law | la ley de tres convicciones graves |
| el. | three-switch mesh substation with by-pass | subestación con paso directo |
| el.gen. | three-switch mesh substation with bypass | subestación con un juego de barras en anillo con tres aparatos de corte, con paso directo |
| CNC, meas.inst. | three-term control | mando de tres niveles |
| meas.inst. | three-term controller | regulador proporcional, por integración y por derivación |
| CNC, meas.inst. | three-term controller | regulador PID |
| tech. | three-throw crankshaft | cigüeñal de tres codos |
| agric. | three tier breeding cage unit | jaula de reproducción unidad de tres pisos |
| mater.sc. | three-unit package | embalaje de tres unidades |
| tech. | three-unit system | sistema de tres unidades |
| med. | three-valve vitium | vicio cardíaco trivalvular |
| el. | three-voltmeter method | método con tres voltímetros |
| el. | three-wattmeter method | método con tres vatímetros |
| agric. | three-way bagging attachment | triple boca de ensaque |
| UN, clim. | three-way catalytic converter | convertidor catalítico de tres vías |
| UN, clim. | three-way catalytic converter | convertidor catalítico de efecto triple |
| mech.eng. | three-way cock | llave de tres vías |
| tech. | three-way cock | grifo de tres conductos |
| auto. | three-way converter | catalizador de tres vías |
| auto. | three-way converter | convertidor de tres vías |
| mater.sc. | three-way corner | esquina de tres caminos |
| forestr. | three-way cross | híbrido de tres líneas |
| forestr. | three-way cross | híbrido de tres vías |
| anim.husb. | three-way crossing | cruzamiento triple |
| tech. | three-way dump body | caja de volquete de descarga por tres lados |
| forestr. | three-way hybrid | híbrido de tres líneas |
| forestr. | three-way hybrid | híbrido de tres vías |
| comp., MS | three-way matching policy | directiva de triple conciliación (A matching policy that requires one or more vendor invoice prices to match with one or more purchase order prices and that requires one or more vendor invoice quantities to match with one or more product receipt quantities) |
| gen. | three-way partnership | cooperación tripartita |
| gen. | three-way partnership | cooperación triangular |
| chem. | three-way pipe | tubo de tres vías |
| mech.eng. | three-way restrictor | reductor de 3 vías |
| mech.eng. | three-way selector | selector de 3 vías |
| mech.eng. | three-way stopcock | llave de tres vías |
| tech. | three-way switch | interruptor de tres posiciones |
| mech.eng. | three-way tap | llave de tres vías |
| construct. | three-way tipper | volquete trilateral |
| agric. | three way tipping trailer | basculante hacia tres costados |
| nat.sc., agric. | three-way tipping 4-wheeled trailer | remolque basculante trilateral |
| tech. | three-way valve | válvula de tres conductores |
| mech.eng. | three-way valve | llave de tres vías |
| tech. | three-way valve | válvula de paso triple |
| med. | three-way-cross hybrid | híbrido de tres vias |
| construct. | three wheel tandem roller | rodillo triciclo |
| transp., agric. | three wheel tractor | tractor para cultivos en línea |
| transp., agric. | three wheel tractor | tractor de tres ruedas |
| tech. | three wheeler | de tres ruedas |
| tech. | three-winding transformer | transformador de triple devanado |
| telecom. | three-wire circuit | circuito trifilar |
| telecom. | three-wire circuit | circuito de tres conductores |
| el. | three-wire mains | circuito de corriente trifásica |
| el. | three-wire meter | contador de tres alambres |
| el. | three-wire network | circuito de corriente trifásica |
| med. | three-word test | prueba de las tres palabras de Masselon |
| med. | three-word test | prueba de Masselon |
| IMF. | three-year arrangement | acuerdo trienal |
| agric. | three-year field system | sistema de tres campos |
| agric. | three-year field system | rotación trienal |
| law, econ. | Three year programme of Consumer Policy in the EEC 1990 to 1992 | Plan trienal de Acción sobre Política de los Consumidores en la CE1990-1992 |
| agric. | three-year rotation | sistema de tres campos |
| agric. | three-year rotation | rotación trienal |
| econ., agric. | three-yearly crop rotation | rotación en trienios |
| econ., agric. | three-yearly crop rotation system | rotación en trienios |
| fin. | treasury bill rate,three month | tipos de interés de los bonos del Tesoro, a tres meses |
| gen. | twenty-three | veintitres |
| stat. | two-by-three-by two factorial n. | diseño factorial 2 x 3 x 2 |
| met., el. | welding transformer with three phase input and single phase double frequency output | transformador trimonofásico doblador de frecuencia para soldeo |
| med. | with a valence of three | trivalente |
| gen. | with a valence of three | que se une con tres átomos de hidrógeno o los sustituye |
| gen. | You have repeated that story three times | Has repetido esa historia tres veces |
